Description
POLASEAL EFM
Water-Based Wood Sealer with Fire Retardant Protection. Deep Penetrating Defense for Exterior Wood Surfaces.
POLASEAL EFM is a single-component, water-based water repellent treatment specifically designed to protect exterior wood and wood composite surfaces. Engineered to penetrate deeply into the substrate, it reacts with air to cure within the wood’s pore structure, creating long-lasting internal protection without forming a surface film.
Enhanced with Nochar® flame retardant technology and a specialized blend of preservatives, POLASEAL EFM helps reduce flame spread while protecting against moisture intrusion, decay, and environmental damage. Its breathable formulation allows moisture vapor to escape, preventing water entrapment while maintaining the natural appearance of wood.
Designed for durability and ease of use, POLASEAL EFM resists UV degradation, microbial growth, pollutants, and chemical exposure. The active ingredients remain locked within the substrate and will not evaporate, migrate, or wash away over time, ensuring reliable, long-term performance in exterior environments.
Key Benefits
- Water & Fire Protection
Repels water while reducing flame spread in the event of fire - Deep Penetrating Formula
Cures within the wood structure for long-lasting internal protection - Nochar® Fire Retardant
Incorporates proven flame-retardant technology for added safety - UV & Environmental Resistance
Protects against sunlight, pollutants, chemicals, and weathering - Breathable Coating
Allows vapor transmission to prevent moisture entrapment - Anti-Rot & Preservation
Contains fungicides and preservatives to resist decay and discoloration - Non-Leaching Actives
Will not evaporate, migrate, or wash away after application - Low Odor & Eco-Friendly
Very low toxicity with easy handling and cleanup - Dimensional Stability
Helps reduce warping, swelling, and shrinkage in wood and composites - Natural Appearance
Maintains the original look of wood without forming a surface film
Recommended Substrates
Suitable for application over:
• Natural wood
• Pressure-treated wood
• Wood composites
• Other porous exterior surfaces
Coverage
Approximately 100–200 sq ft per gallon
(Coverage may vary depending on substrate condition and porosity.)
Container Sizes
1 gallon, 5 gallon
Color
Transparent
Technology
Water-Based Siloxane Penetrating Sealer with Fire Retardant Additives
Test Reports
| MATERIAL TESTED | TYPE | RESULTS |
| Spruce 2″ x 4″ | ASTM E-84 | Passed Class B |
| 3/8″ Lauan Plywood | ASTM E-84 | Passed Class B |
| Southern Pine Plywood | ASTM E-84 | Passed Class C |
| 3/4″ Red Oak Lumber | ASTM E-84 | Passed Class C |
| 20 lb Computer Bond Paper | ASTM E-84 | Passed Class A |
| 1/2 Pine Shakes | ASTM E-84 | Passed Class B |
| 15/32″ Plywood | ASTM E-84 | Passed Class A |
| Spruce 2″ x 4″ | ASTM E-84 | Passed Class A |
| 3/4″ Douglas Fir Flooring | ASTM E-84 | Passed Class B |
POLASEAL EFM Application Guidelines
Surface Preparation
POLASEAL EFM is designed as a single-coat treatment; however, a second coat may be beneficial for certain wood types.
All surfaces must be clean and free of loose debris, dirt, mildew, oil, and grease. Surfaces may be slightly damp, but not wet. For best results, apply to a dry surface to ensure maximum penetration into the substrate.
Previously painted, stained, or treated surfaces may limit penetration. A test application is recommended on such surfaces to verify compatibility and performance.
Application
Apply POLASEAL EFM using a brush, roller, or low-pressure spray. Brush and roller applications are preferred, as they enhance penetration into the wood.
Fully saturate the surface during application:
- Vertical surfaces: Apply enough material to produce a slight runoff.
- Horizontal surfaces: Begin at one edge and work backward, ensuring even saturation across the surface.
Allow treated wood to dry thoroughly for proper curing. Full cure is achieved over approximately two weeks.
Spray Application
For spray applications, use HVLP (high-volume, low-pressure) equipment.
Clean-Up
Clean tools and equipment immediately after use with water.
Limitations
- Always perform a test application on previously treated, stained, or painted surfaces to confirm compatibility.
- A test application is also recommended when precise coverage rates are required.
- Stir or shake thoroughly before use.
- Do not apply to frosted or saturated surfaces.
- Do not apply if precipitation is expected within 8 hours.
- Avoid spraying in strong wind conditions.
Protect adjacent plants and shrubbery from overspray. While overspray typically does not affect glass, metal, or painted surfaces if addressed promptly, it should be removed immediately using a damp cloth followed by a glass cleaner. Remove overspray from glass, metal, or vinyl surfaces as soon as possible.
Safety Information
Read the product label and Safety Data Sheet (SDS) prior to use for important health and safety information.
Keep out of reach of children and pets.
For additional information, contact the Andek Technical Department.
POLASEAL EFM Technical Data
| VOC | 0 gms/liter |
| Density | 8.5 lb/gallon |
| Solids Content | 20% (B.W.); 20% (B.V.) |
| Chemistry | Amino-functional siloxanes |
| Reactivity | Air oxidation cure |
| pH | Approximately 7.5 |
| Actives | Approximately 15% |